Goblin Pox success and fail give same result

[shade2077]

From the Rulebook page 227: Goblin Pox

Your touch afflicts the target with goblin pox. The effect is based on the result of the target’s Fortitude save.
Success The target is sick 1.
Critical Success The target is unaffected.
Failure The target is afflicted with goblin pox at stage 1.
Critical Failure The target is afflicted with goblin pox at stage 2.
Goblin Pox (disease) Level 1. Goblins and goblin dogs are immune.
Stage 1 sick 1 (1 round); Stage 2 sick 1 and slowed 1 (1 round);
Stage 3 sick 1 and can’t reduce its sick value below 1 (1 day).

So what's the difference between a success and a fail on the saving throw? If the PC saves they get the Sick 1 condition; if the PC fails they get the Sick 1 condition for 1 round.

[Xenocrat]

A success means you're Sick 1, and that's all. You can get rid of the Sick condition as usual, by spending actions and making a Fortitude save. Once you do that, you're done.

A failure means you have Stage 1. Not only are you Sick 1, you have to continue saving at the listed interval (1 round) in order to either heal and go up a stage (which would be cured) or down a stage, with worse effects. You can make action saves to remove the sick condition in addition to your automatic save to either get worse or better on the stage tracker. If you remove Sick 1, but fail your stage save and move to stage 2, you get Sick 1 again until you remove it. If you ever hit stage 3 you're Sick 1, can't remove it, and only make saves every day to try to make it back up to stage 2.